Gordon regularly demonstrated his physical mediumship in front of large audiences at the Arthur Findlay College (Stansted Hall) and a number of other venues. Gordon demonstrated the following physical phenomena during his seances over the years:
- full and partial materialisation
- independent voice
- production of apports
A rare photograph taken during one of his physical seances during Physical Week at the Arthur Findlay College is shown below and ectoplasm can clearly be seen flowing from his mouth, building up on the floor. The photograph was taken in the Library at Stansted Hall on 15th November 1974 using infra-red photography and the medium Ronald Baker is holding back the curtain.